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  • 學位論文

ZigBee無線網路之定位系統設計

Positioning System with ZigBee Wireless Network

指導教授 : 李榮全
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摘要


隨著科技日新月異,高科技建築也隨之蓬勃發展,當建築物涵蓋範圍及體積日趨增加,衛星訊號受到建築物遮擋影響,導致全球定位系統(Global Position System, GPS)接收機在室內環境無法順利接收衛星訊號,定位誤差大增,使得在室內定位系統設計上GPS精度已不敷使用。 本論文以ZigBee無線網路架構室內定位系統,在室內空間中佈置參考節點,透過ZigBee無線網路將訊號傳輸訊號至定位節點,定位節點再以接收訊號強度值推算離參考節點之距離,得知和各參考節點之距離後,再經由三角定位法則即可推算定位節點之位置,將計算後的位置傳至電腦端顯示。並以靜態及動態實驗進行數據分析及誤差探討,歸納產生定位誤差的原因以及修正方法。 本論文提出的室內定位系統,透過ZigBee無線傳輸、RSSI判斷距離與三角定位法則搭配應用,將系統無線化、智慧化、人性化、低成本化,改善室內無法以GPS定位的缺點,增加建築位內的系統定位能力。

關鍵字

ZigBee RSSI 定位系統

並列摘要


In recent decades, technology has developed rapidly and the usage of high-tech building is also growing. Due to the structures, Global Positioning System (GPS) cannot receive signal transmission in the indoor space properly. Therefore, GPS positioning is ineffective in the indoor space. The study aims to implement an indoor positioning system which based on ZigBee wireless network. The researchers placed the reference node in the indoor space. Reference node send signals to the positioning node by ZigBee wireless signal transmission. Therefore, the researchers can calculate the distance between the reference nodes and the positioning nodes by received signal strength values. After calculating the distance of positioning node between the reference nodes and positioning node, the researchers can analyze the data and figure out the positions by Triangle Math. The current positions display on computer. With data and analysis of static and dynamic experiment, the researchers can find out the error of positioning and come out with the corrections. Indoor Positioning System with ZigBee wireless network improved the drawbacks of GPS by designing wireless, intelligent, humanization and low cost. It increases the accuracy of Positioning in buildings.

並列關鍵字

ZigBee RSSI Indoor Positioning System

參考文獻


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